PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 20133149-2 2011 TAM can have both estrogen-antagonistic and estrogen-agonistic effects, and expression of growth factor receptors such as human epidermal growth factor receptor (HER)2 in breast cancer is associated with the development of TAM resistance. Tamoxifen 223-226 epidermal growth factor receptor Homo sapiens 128-160